Method of making tying bills for knotters



a. A. PETERSON Original Filed April 1. 1920 j. @10256750724 5 MM L a.

June 29 1926'.

METHOD OF MAKING TYING BILLS FOR KNOTTERS Patented June29, 1926.

UNITED'STATES PATENT OFFECE.

BURT A. PETERSON, OF ROCKFORD, ILLINOIS, ASSIGNOR TO BARBER-COLMA-N COM- PANY, OF ROCKFORD, ILLINOIS, A CORPORATION OF ILLINOIS.

METHOD OF MAKING TYING BILLS FOR KNOTTERS.

Original application filed April 1, 1920, Serial No.

The invention has general reference to knot-tying devices commonly used in the textile arts for uniting the ends of thread or yarn, and it has more special reference to the tying bill of the knot-forming mechanism.

The object of the invention is to provide a novel method of constructing a tying bill, which reduces the cost of manufacture and at the same time produces a bill which accomplishes effectually the purposes for which it is intended.

In the accompanyingdrawings Figure 1 is a vertical sectional view through a knotter having a tying'bill constructed in accordance with my invention.

Fig. 2 is a fragmentary vertical sectional view illustrating one stage in the construction of the bill.

Fig. 3 is a vertical sectional view showing the major portion of the bill in its completed form.

Fig. 4 is a fragmentary vertical sectional view illustrating the parts of the complete bill in assembled relation.

The knotter selected for purposes of illustration comprises briefly an annular or cylindrical casing 10 having a tying bill 13 rotatably supported therein through the medium of a spindle 14s. The latter is journaled transversely of the casing and has a gearing connection with a drive element 15 also enclosed within a casing. In the peripheral wall of the casing there is provided a bearing 20 in which is journaled one end of the spindle, and diametrically opposite said bearing and secured within the casing is a member 21 providing a bearing for the opposite end of the spindle.

The casing is, in practice, provided with a suitable support (not shown) such that the casing is capable of being rotated as through the medium of the thumb lever 17 rigid therewith, and the driving element 15 is made stationary with reference to said support. On the exterior of the casing, adjacent the tying bill, is a thread clamping device 16 which is also made stationary with respect to said support. Thus in the oscillation of the casing, the tying bill moving bodily therewith, swings with reference to the thread clamping device. For a more detaileddescription of the knotter construc tion reference is made to my copending 370,396. Divided and this application filed August 15, 1924. Serial No. 732,142.

application Serial No. 370,396, filing date April 1, 1920, of which this application is a division;

The tyingbill 13 comprises a stationary clamping jaw 27 rigid with the spindle 14:

and carrying a pivot pin 28 upon which is mounted a movable shearing and clamping jaw 29 coacting with the jaw 27 and also with a stationary shearing member 30 com monly termed a bill spring. The lower portion of the movable jaw 29 is shaped to "30 to effect a clamping and shearing of the thread or threads held thereby, as is well understood in the art. I

In accordance with my invention the stationary clamping jaw 27 of the tying bill and the shaft or spindle 14: are formed integral from a single piecev of drill stock. Thus one end of this piece of stock is initially provided with a longitudinal bore 32 therein and then the upper portion of the bored end of the stock is reduced, in diameter by swaging as shown at 33 (Fig. 2). Next the reduced end is bent at substantially right angles to the axis of the stock, to form the stationary clamping jaw 27 and a supporting shank 27 therefor. One side of the reduced portion is now cut away to reduce the thickness by substantially one-half as shownin Fig. 3, so as to provide a flat bearing surface for the movable shearing and clamping jaw 29. To

complete this portion of the bill the upper edge of the jaw 27 ground as at 27 to provide a rounded clamping edge; and the pin 28' is mounted in the inner end of the jaw 27, it being observed from Fig. l'that the latter provides ample thickness for a firm and rigid mounting of the pin.

In cutting. away the side of the stock as above described an opening into the lower end of the bore 32 is provided, and this open end of the bore is adapted to receive the lower end of the bill spring 30 while the upper end thereof is held by the pin 28, the latter being provided with a suitable opening 36 for receiving the pin To insure that the bill spring shall not become disengaged from the pin the latter is slightly elongated and the portion of the bill spring surrounding the pin is struck out as shown at 37 (Fig. 4).

Preferably the wall of the bore 32 upon diametrically opposite sides thereof is shaped at its upper ends at 34 and 35 respectively (Fig. 4) to provide opposed bearing surfaces for the opposite sides of the lower end of the spring. These coact to force the upper end of the spring into hold ing engagement with the movable jaw 29.

Substantially centrally of the spindle 14, it is provided with an annular groove adapted to receive the inner end of a stud 44 carried by the casing and serving to hold the spindle in position in the casing in the manner fully set forth in my said copending application. The lower end of the spindle is cut to form a pinion 46 adapted to mesh with a gear segment 47 carried by the driving element 15.

It will be observed that I have produced a method of making knot-tying hills which materially simplifies the manufacturing operation, so that the cost of construction is reduced to a minimum. Moreover the con struction insures that the parts of the bill shall be capable of being readily detached for purposes of renewal, while in operation they are firmly held in position.

I claim as my invention:

1. The method of making a tying bill for knotters which consists in drilling the upper end of a piece of solid stock to form a tubular upper portion, reducing the upper end of said tubular portion, and shaping said reduced portion to provide a support having a flat surface disposed substantially in the plane of the longitudinal axis of the spindle, upon. which to mount the bill spring and the clamping and shearing member, with the lower end of the spring entered into the tubular upper end of the spindle.

2. The method of making a tying bill for knotters which consists in reducingthe upper end of a hollow spindle by which the bill is to be carried, and shaping the upper 7 end of said reduced portion to providea support having a fiat surface disposed substantially in the plane of the longitudinal axis of the spindle, upon which to support bill spring and a clampin and shearing member, with'the lower end of the bill spring entered into the upper end ofthe spindle. 3. The method ofmaking a tying bill for knotters which consists in drilling the up per end of a shaft or spindle by which the ill is to be carried to form a tubular upper portion, reducing the upper end of said tubular portion, shaping said reduced portion to provide a support having a fiat surface disposed substantially in the plane of the lon itudinal axis ofthe s indle n 3011 which.

knot-tying bills flattening one end of the tube, bending the flattened end at substantially right angles to the axis of the tube, and cutting away one side of such flattened end whereby to open the lower end of the tube to receive the lower end of the bill spring.

5. The method of making a tying bill which consists in drilling a piece of stock to form a tubular end, flattening the tubular end and bending thev same at right angles, and cutting away one side of'the flattened tube to form a stationary jaw having a flat bearing surface for the movable jaw of the bill, and to provide an opening into the tube adapted to receive the lower'end of the bill spring. 7

.6. The method of making the stationary clamping jaw of a tying bill, which consists knotters which consists in formingthe upper end of a shaft or spindle tubular, flattening the tubular portion, cutting away one side of the flattened portion to provide a flat surface extending in a direction axially of the spindle so as to provide a support for a movable clamping and shearing member, and shaping the said tubular portion to pro vide two opposed surfaces spaced apart axially of the spindle and actin upon a bill spring entered into the'tubular portion and between said opposed surfaces so as to yieldably force the other end of the bill spring toward said flat surface and hold the clamping and shearing member in position.

In testimony whereof, I have hereunto affixed my signature.

BURT A. rnrnnson 

